Tarn Aeluin
E921272
Tarn Aeluin is a small, enchanted lake in J.R.R. Tolkien’s legendarium, famed as the hidden refuge of Barahir and his outlaw band in the wilds of Beleriand.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Tarn Aeluin canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11348166 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Tarn Aeluin Context triple: [Beleriand, containsSettlement, Tarn Aeluin]
-
A.
Tol Morwen
Tol Morwen is a small, solitary island in J.R.R. Tolkien’s Middle-earth legendarium, notable as the resting place of Morwen and her children Túrin Turambar and Niënor.
-
B.
Emyn Muil
Emyn Muil is a rugged, labyrinthine range of hills and rocky ridges in J.R.R. Tolkien’s Middle-earth, known for its treacherous terrain bordering the Dead Marshes and the Emyn Arnen region.
-
C.
Glaslyn
Glaslyn is a small glacial lake nestled high on the eastern slopes of Mount Snowdon in Snowdonia, Wales, known for its striking blue-green waters and dramatic mountain scenery.
-
D.
Ellgau
Ellgau is a small municipality in the Swabian region of Bavaria in southern Germany.
-
E.
Carn Dûm
Carn Dûm is the chief stronghold and fortress-city of the Witch-king’s realm of Angmar in J.R.R. Tolkien’s Middle-earth legendarium.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Tarn Aeluin Target entity description: Tarn Aeluin is a small, enchanted lake in J.R.R. Tolkien’s legendarium, famed as the hidden refuge of Barahir and his outlaw band in the wilds of Beleriand.
-
A.
Tol Morwen
Tol Morwen is a small, solitary island in J.R.R. Tolkien’s Middle-earth legendarium, notable as the resting place of Morwen and her children Túrin Turambar and Niënor.
-
B.
Emyn Muil
Emyn Muil is a rugged, labyrinthine range of hills and rocky ridges in J.R.R. Tolkien’s Middle-earth, known for its treacherous terrain bordering the Dead Marshes and the Emyn Arnen region.
-
C.
Glaslyn
Glaslyn is a small glacial lake nestled high on the eastern slopes of Mount Snowdon in Snowdonia, Wales, known for its striking blue-green waters and dramatic mountain scenery.
-
D.
Ellgau
Ellgau is a small municipality in the Swabian region of Bavaria in southern Germany.
-
E.
Carn Dûm
Carn Dûm is the chief stronghold and fortress-city of the Witch-king’s realm of Angmar in J.R.R. Tolkien’s Middle-earth legendarium.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
fictional lake
ⓘ
location in Middle-earth ⓘ |
| aftermath | Beren builds a cairn for Barahir by the lake ⓘ |
| appearsIn |
The History of Middle-earth
ⓘ
The Lay of Leithian ⓘ The Silmarillion ⓘ |
| associatedWith |
Barahir
ⓘ
Beren ⓘ House of Bëor ⓘ outlaws of Dorthonion ⓘ |
| category |
Lakes of Beleriand
ⓘ
linked to:
Lake Mithrim
Locations associated with Beren and Lúthien ⓘ |
| creator | J. R. R. Tolkien ⓘ |
| describedAs |
deep blue lake
ⓘ
enchanted lake ⓘ hidden lake ⓘ small lake ⓘ |
| era | Elder Days ⓘ |
| event |
Beren’s return to find his father’s band destroyed
ⓘ
betrayal of Barahir’s band by Gorlim ⓘ slaying of Barahir ⓘ |
| knownFor |
being a secret refuge from Morgoth’s forces
ⓘ
being difficult to find ⓘ its clear and bright waters ⓘ |
| languageOfName | Sindarin ⓘ |
| locatedIn |
Beleriand
ⓘ
Dorthonion ⓘ north of Beleriand ⓘ |
| memorial | cairn of Barahir ⓘ |
| nameElement |
"Aeluin" related to "ael" (pool) and "uin" (large water) in Sindarin
ⓘ
"tarn" means mountain lake ⓘ |
| nameMeaning | Lake of Aeluin ⓘ |
| near |
borders of Ard-galen
ⓘ
linked to:
plains of Ard-galen
highlands of Dorthonion ⓘ
linked to:
Dorthonion
|
| partOf |
Middle-earth
ⓘ
Tolkien legendarium ⓘ
linked to:
legendarium of Middle-earth
|
| protectedBy | spells of Melian ⓘ |
| surroundedBy |
heath
ⓘ
hills of Dorthonion ⓘ
linked to:
Dorthonion
pine woods ⓘ |
| threatenedBy |
servants of Morgoth
ⓘ
linked to:
Orcs of Morgoth
|
| timePeriod | First Age ⓘ |
| universe | Arda ⓘ |
| usedAs |
hideout of Barahir’s outlaw band
ⓘ
refuge of Barahir ⓘ stronghold of the House of Bëor’s remnants ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Tarn Aeluin Description of subject: Tarn Aeluin is a small, enchanted lake in J.R.R. Tolkien’s legendarium, famed as the hidden refuge of Barahir and his outlaw band in the wilds of Beleriand.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.